Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 6:07 am (0.3 ft)
Next high tide (tomorrow) : in 6h 18m at 12:12 am (2.8 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Aug 2060

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:522.911:552.75:130.35:270.65:428:02Waxing Crescent1Sun
2Mon12:332.85:410.46:170.75:438:01First Quarter2Mon
3Tue12:342.51:122.86:160.67:180.85:448:00First Quarter3Tue
4Wed1:162.31:542.76:570.78:300.95:457:58First Quarter4Wed
5Thu2:032.22:432.77:450.79:470.95:467:57First Quarter5Thu
6Fri2:592.13:442.78:400.710:530.85:477:56Waxing Gibbous6Fri
7Sat4:082.14:522.99:430.711:470.75:487:55Waxing Gibbous7Sat
8Sun5:142.35:483.110:500.65:497:53Waxing Gibbous8Sun
9Mon6:072.56:363.312:340.511:49 AM0.45:507:52Waxing Gibbous9Mon
10Tue6:542.77:213.51:170.312:410.25:517:51Full Moon10Tue
11Wed7:393.08:053.71:580.11:320.05:527:49Full Moon11Wed
12Thu8:253.28:493.82:350.02:21-0.15:537:48Full Moon12Thu
13Fri9:113.49:343.73:10-0.23:09-0.15:547:47Full Moon13Fri
14Sat9:583.610:203.63:44-0.23:58-0.15:557:45Waning Gibbous14Sat
15Sun10:473.711:093.44:19-0.24:500.05:567:44Waning Gibbous15Sun
16Mon11:383.74:58-0.25:520.25:577:43Waning Gibbous16Mon
17Tue12:023.112:333.65:430.07:120.45:587:41Third Quarter17Tue
18Wed12:582.91:313.56:350.18:340.55:597:40Third Quarter18Wed
19Thu1:582.72:353.47:360.39:490.56:007:38Third Quarter19Thu
20Fri3:052.63:473.38:500.410:550.56:017:37Waning Crescent20Fri
21Sat4:182.65:003.310:170.411:530.46:027:35Waning Crescent21Sat
22Sun5:252.76:013.311:280.36:037:34Waning Crescent22Sun
23Mon6:212.96:533.412:430.312:250.26:047:32Waning Crescent23Mon
24Tue7:103.17:383.41:280.21:140.26:057:31New Moon24Tue
25Wed7:563.28:183.42:070.11:570.16:067:29New Moon25Wed
26Thu8:383.38:563.42:410.12:350.16:077:27New Moon26Thu
27Fri9:183.39:303.23:100.13:090.26:087:26New Moon27Fri
28Sat9:553.310:033.13:340.13:410.36:097:24Waxing Crescent28Sat
29Sun10:303.210:372.93:540.24:140.46:107:23Waxing Crescent29Sun
30Mon11:043.111:122.74:180.34:500.56:117:21Waxing Crescent30Mon
31Tue11:402.911:512.54:480.45:310.76:127:19Waxing Crescent31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

Common Questions About Block Island, RI Tides

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What time does the tide turn (slack tide) in Block Island, RI today?

Slack tide in Block Island, RI is approximately 3:09 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Block Island, RI?

Block Island, RI is currently in a transitional phase. Tonight's moon is 72% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are shifting between spring and neap.

What datum are Block Island, RI tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Block Island, RI?

Tide predictions for Block Island, RI come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Block Island, RI?

Tide data for Block Island, RI is sourced from NOAA Station #8459338. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8459338.

What is the moon phase in Block Island, RI tonight?

Tonight the moon over Block Island, RI is Waning Gibbous (72% illuminated). This places Block Island, RI in a transitional tide cycle, so tidal ranges are shifting between spring and neap this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA